54135688 has 16 divisors (see below), whose sum is σ = 101632860. Its totient is φ = 27033600.

The previous prime is 54135677. The next prime is 54135689. The reversal of 54135688 is 88653145.

It can be written as a sum of positive squares in 2 ways, for example, as 53846244 + 289444 = 7338^2 + 538^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 54135688.

It is not an unprimeable number, because it can be changed into a prime (54135689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3208 + ... + 10888.

Almost surely, 2^54135688 is an apocalyptic number.

It is an amenable number.

54135688 is a deficient number, since it is larger than the sum of its proper divisors (47497172).

54135688 is a wasteful number, since it uses less digits than its factorization.

54135688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8568 (or 8564 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The square root of 54135688 is about 7357.6958349744. The cubic root of 54135688 is about 378.2926356675.

The spelling of 54135688 in words is "fifty-four million, one hundred thirty-five thousand, six hundred eighty-eight".